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EP0041355B1 - Dérivés d'érythromycine - Google Patents

Dérivés d'érythromycine Download PDF

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Publication number
EP0041355B1
EP0041355B1 EP81302328A EP81302328A EP0041355B1 EP 0041355 B1 EP0041355 B1 EP 0041355B1 EP 81302328 A EP81302328 A EP 81302328A EP 81302328 A EP81302328 A EP 81302328A EP 0041355 B1 EP0041355 B1 EP 0041355B1
Authority
EP
European Patent Office
Prior art keywords
compound
formula
mixture
methyl
pharmaceutically acceptable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81302328A
Other languages
German (de)
English (en)
Other versions
EP0041355A1 (fr
Inventor
Yoshiaki Watanabe
Shigeo Morimoto
Sadafumi Omura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisho Pharmaceutical Co Ltd
Original Assignee
Taisho Pharmaceutical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26416408&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0041355(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP7525880A external-priority patent/JPS572298A/ja
Priority claimed from JP55159128A external-priority patent/JPS5782400A/ja
Application filed by Taisho Pharmaceutical Co Ltd filed Critical Taisho Pharmaceutical Co Ltd
Priority to AT81302328T priority Critical patent/ATE2623T1/de
Publication of EP0041355A1 publication Critical patent/EP0041355A1/fr
Application granted granted Critical
Publication of EP0041355B1 publication Critical patent/EP0041355B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
    • C07H17/04—Heterocyclic radicals containing only oxygen as ring hetero atoms
    • C07H17/08—Hetero rings containing eight or more ring members, e.g. erythromycins

Definitions

  • the present invention relates to novel and useful erythromycin compounds of the formula wherein R 1 is hydrogen or methyl, or a pharmaceutically acceptable salt thereof, having a strong antibacterial activity against Gram-positive bacteria.
  • the present invention is based on the discovery that novel compounds of formula (I) exhibit significantly antibacterial activity against Gram-positive bacteria even when administered orally, contrary to other closely analogous compounds such as erythromycin A. That is, although erythromycin A is known to be a useful macrolide antibiotics having a strong activity against Gram-positive bacteria, this compound has an undesirable property that it loses rapidly the antibacterial activity by the acid in stomach when administered orally, whereupon its blood concentration remains at a low level.
  • the compound of formula (I) may be prepared, for example, by the following processes.
  • a compound of the formula may be reacted with methyl iodide in the presence of a suitable base in a solvent to give a compound of the formula wherein R 1 is as defined above.
  • reaction 5-10 moles of methyl iodide and 1-2 moles of the base are employed per mole of the compound of formula (II).
  • the reaction proceeds at temperature ranging from -78°C to room temperature, preferably from -15°C to 5°C.
  • Examples of the base are an alkali metal hydride (e.g., lithium hydride, sodium hydride or potassium hydride), an alkali metal amide (e.g., lithium amide, sodium amide or potassium amide), butyllithium or lithium diisopropylamide.
  • an alkali metal hydride e.g., lithium hydride, sodium hydride or potassium hydride
  • an alkali metal amide e.g., lithium amide, sodium amide or potassium amide
  • butyllithium or lithium diisopropylamide e.g., butyllithium or lithium diisopropylamide.
  • Suitable solvents include polar aprotic solvents such as N,N-dimethylformamide, N,N-dimethylacetamide, dimethylsulfoxide or hexamethylphosphoric triamide, preferably N,N-dimethylformamide, dimethylsulfoxide or their mixture with tetrahydrofuran.
  • polar aprotic solvents such as N,N-dimethylformamide, N,N-dimethylacetamide, dimethylsulfoxide or hexamethylphosphoric triamide, preferably N,N-dimethylformamide, dimethylsulfoxide or their mixture with tetrahydrofuran.
  • Purification of the compound of formula (III) may be carried out by using conventional methods such as silica gel column chromatography.
  • the compound of formula (III) may be treated to remove benzyloxycarbonyl group by hydrogenolysis, and then subjected to the reductive methylation in the presence of excess amount of formaldehyde to give the compound of formula (I).
  • the compound of formula (I) may be obtained by performing removal of benzyloxycarbonyl group and N-methylation of the compound of formula (III), at the same time.
  • the pharmaceutically acceptable salts of the compounds of formula (I) include salts with acids such as an organic carboxylic acid (e.g., tartaric acid, citric acid, stearic acid or succinic acid), methanesulfonic acid, aminoethanesulfonic acid, an amino acid (e.g., aspartic acid or glutamic acid) or the like. These salts may be obtained by treating the compound of formula (I) with the corresponding acid in the conventional manners.
  • acids such as an organic carboxylic acid (e.g., tartaric acid, citric acid, stearic acid or succinic acid), methanesulfonic acid, aminoethanesulfonic acid, an amino acid (e.g., aspartic acid or glutamic acid) or the like.
  • acids such as an organic carboxylic acid (e.g., tartaric acid, citric acid, stearic acid or succinic acid), methanesulfonic acid, aminoethanesulfonic
  • the compounds of formula (II) may be prepared according to the above-described method of E. H. Flynn et al.
  • the compounds of the present invention can be used as therapeutic agents against Gram-positive bacteria, mycoplasma and chlamydia in mammals.
  • a compound of formula (I) may be administered orally or parenterally in a conventional dosage form such as tablet, capsule, powder, troches, dry mixes, ointment, suspension or solution prepared according to conventional pharmaceutical practises.
  • These compounds of formula (I) can be administered at a dosage of from about 1 mg/kg to about 1000 mg/kg of body weight per day.
  • the preferred dosage range is from about 5 mg/kg to about 200 mg/kg of body weight per day.
  • the compounds of the present invention have extremely low toxicity.
  • the LD so in mice is in excess of 5000 mg/kg of body weight.
  • TE-031 and TE-032 refer to 6-O-methylerythromycin A and 6,11-di-O-methyierythromycin A of the present invention, respectively.
  • the compound of the formula (I) was treated in the Clark-Lubs's buffer solution at pH 2 for the prescribed period of time.
  • the compound of the formula (1) was tested for the antibacterial activity by the agar plate dilution method, using erythromycin A for the control.
  • the results, indicated as the minimum inhibitory concentrations (MIC), are shown in Table 2.
  • mice Male ddY mice (body weight, 18-22 g; 14 mice per group) were inoculated with Staphylococcus aureus Smith No. 4. The compound of the formula (I) was administered orally one hour after the inoculation, and the number of mice surviving for seven days after the administration was noted. The results are shown in Table 3.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)

Claims (8)

1. Dérivé d'érythromycine de formule
Figure imgb0019
dans laquelle R1 est hydrogène ou méthyle, ou l'un de ses sels pharmaceutiquement acceptable.
2. Composé selon la revendication 1, dans lequel R1 est hydrogène.
3. Composé selon la revendication 1, dans lequel R1 est méthyle.
4. Composition pharmaceutique qui comprend, conjointement avec un véhicule pharmaceutiquement acceptable, une quantité pharmaceutiquement active d'un composé de la revendication 1.
5. Procédé pour la production d'un dérivé d'érythromycine de formule I:
Figure imgb0020
dans laquelle R1 est hydrogène ou méthyle, ou d'un de ses sels pharmaceutiquement acceptables, qui consiste à soumettre un composé de formule III:
Figure imgb0021
 dans laquelle R1 est défini comme plus haut, à une hydrogénolyse pour enlever les groupements benzyloxycarbonyle, puis à soumettre le produit résultant à une N-méthylation réductrice.
6. Procédé selon la revendication 5, dans lequel le produit réactif obtenu par hydrogénolyse, est utilisé après avoir été isolé, ou sans l'avoir été, dans la réaction de N-méthylation.
7. Procédé selon la revendication 5, dans lequel on utilise du noir de palladium comme catalyseur d'hydrogénolyse, et de la formaldéhyde comme agent de méthylation pour la N-méthylation réductive.
8. Procédé pour la production d'un produit pharmaceutique, qui consiste à mélanger un produit obtenu par le procédé selon une des revendications 5 à 7, avec un diluant pharmaceutiquement acceptable.
EP81302328A 1980-06-04 1981-05-27 Dérivés d'érythromycine Expired EP0041355B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81302328T ATE2623T1 (de) 1980-06-04 1981-05-27 Erythromycin-derivate.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7525880A JPS572298A (en) 1980-06-04 1980-06-04 Erythromycin derivative
JP75258/80 1980-06-04
JP55159128A JPS5782400A (en) 1980-11-12 1980-11-12 Erythromycin derivative
JP159128/80 1980-11-12

Publications (2)

Publication Number Publication Date
EP0041355A1 EP0041355A1 (fr) 1981-12-09
EP0041355B1 true EP0041355B1 (fr) 1983-02-23

Family

ID=26416408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81302328A Expired EP0041355B1 (fr) 1980-06-04 1981-05-27 Dérivés d'érythromycine

Country Status (4)

Country Link
US (1) US4331803A (fr)
EP (1) EP0041355B1 (fr)
DE (1) DE3160084D1 (fr)
NL (1) NL930083I2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2266590A2 (fr) 2002-02-22 2010-12-29 Shire LLC Système d'administration de substances actives et méthodes de protection et d'administration de substances actives

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* Cited by examiner, † Cited by third party
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RU2015138796A (ru) 2013-03-14 2017-04-19 Семпра Фармасьютикалс, Инк. Способы и составы для лечения респираторных заболеваний
HK1218864A1 (zh) 2013-03-15 2017-03-17 森普拉制药公司 用於制备大环内酯抗菌剂的收敛方法
CN105801642B (zh) * 2016-03-11 2019-03-26 北京理工大学 一种制备6,11-双-o-甲基红霉素a的方法

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US3674773A (en) * 1970-10-06 1972-07-04 Abbott Lab Erythromycin derivatives
US3923784A (en) * 1973-09-10 1975-12-02 Hoffmann La Roche Erythromycin a derivatives

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EP2266590A2 (fr) 2002-02-22 2010-12-29 Shire LLC Système d'administration de substances actives et méthodes de protection et d'administration de substances actives
EP2316469A1 (fr) 2002-02-22 2011-05-04 Shire LLC Système de distribution et méthodes de protection et d'administration de dextroamphetamine
EP2316468A1 (fr) 2002-02-22 2011-05-04 Shire LLC Système de distribution et méthodes de protection et d'administration de dextroamphetamine

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EP0041355A1 (fr) 1981-12-09
DE3160084D1 (en) 1983-03-31
NL930083I1 (nl) 1993-09-16
NL930083I2 (nl) 1994-12-01
US4331803A (en) 1982-05-25

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